Inside a razor page, I must know whether a model property is decorated by [Required].
The conventional answer is:
@{
var isNameRequired =
Context
.RequestServices.GetRequiredService<IModelExpressionProvider>() // yuck!
.CreateModelExpression(ViewData, x => x.Company.Details.Name)
.Metadata
.IsRequired;
}
That uses the service locator anti-pattern. (I realise I could inject that service instead, but want to avoid another dependency for something so simple).
Is there another way to do this?
There is plenty of detail in the page's ViewData, but there's no way (I can find) to use a lambda expression (x => x.Company.Details.Name) to drill down into the property I want. It's in there, I just can't find a way to get it using a lambda instead of a magic string.
